$ git clone -n https://src.fedoraproject.org/rpms/perl-Getopt-Long-Descriptive.git /var/lib/mock/f45-build-23774-599/root/chroot_tmpdir/scmroot/perl-Getopt-Long-Descriptive
Cloning into '/var/lib/mock/f45-build-23774-599/root/chroot_tmpdir/scmroot/perl-Getopt-Long-Descriptive'...
$ git fetch origin 99ea8689dccff589aeace12f45bf93ea227671d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Getopt-Long-Descriptive
 * [new ref]         99ea8689dccff589aeace12f45bf93ea227671d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99ea868 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild